Just I update my studio (version 2.3) and build version ('25.0.0'),
now, when i try to create new activity then automatically constraintlayout dependency added in my build.gradle file.
and layout render as parent ConstraintLayout, can anyone know how to remove this dependency when activity is created.
Before activity creation gradle code.
dependencies {
  compile 'com.android.support:support-v4:23.2.1'
}
After activity creation gradle code.
dependencies {
  compile 'com.android.support:support-v4:23.2.1'
  compile 'com.android.support.constraint:constraint-layout:1.0.0'
}